Question

Statistics formulas for grouped and ungrouped data

Answer 1

Answer:

these are the formulas I know of

Step-by-step explanation:

Mean Direct method- ∑fixi÷ ∑fi

Mean Assumed mean method- A + ∑fidi÷∑fi

Mean Step Deviation method- A +∑fiui÷∑fi × h

Mode (for grouped data)- l +( f₁ - f₂÷ 2f₁ -  f₀ - f₂) × h

Median for ungrouped data     if n is odd the median is the [(n+1) ÷2]th observation

if n is even then the median will be the average of the (n÷2)th and (n÷2 + 1)th observation

median for grouped data - l +( n/2 - cf ÷ f )  × h

if helpful pls add thanks!!